The latest version of GNewsense is built straight on Debian. The only
downside is losing any extra bug fixes, security checks etc performed during
the Ubuntu packaging. These will presumably migrate upstream into the Debian
repos eventually, but it takes time for them to filter from experimental
through unstable and testing before they get to stable (I presume GNewsense
like Trisquel is built on stable/ LTS releases)
http://www.gnewsense.org/FAQ#Why_is_gNewSense_3_based_on_Debian_instead_of_Ubuntu.3F
I haven't been able to install GNewsense yet, as it hasn't work with
UNetbootin, but now that I have both a laptop and a desktop that have CD-ROM
drives, I can try a wider range of distros. Has anyone tried it? If so, how
does it compare to Trisquel?